diff --git a/src/server.h b/src/server.h
index 5a95d4c1..547e7a4b 100644
--- a/src/server.h
+++ b/src/server.h
@@ -46,6 +46,7 @@
 #include <pthread.h>
 #include <syslog.h>
 #include <netinet/in.h>
+#include <sys/socket.h>
 #include <lua.h>
 #include <signal.h>